28298180

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{14009}}^1$

素因数の和:14119

約数の個数: 24

約数和(自身を含む): 60018840

約数和(自身を除く): 31720660

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 14009, 28018, 56036, 70045, 140090, 280180, 1414909, 2829818, 5659636, 7074545, 14149090, 28298180]

約数ペア:

[(1, 28298180), (2, 14149090), (4, 7074545), (5, 5659636), (10, 2829818), (20, 1414909), (101, 280180), (202, 140090), (404, 70045), (505, 56036), (1010, 28018), (2020, 14009)]